Selone
In chemistry, a selone is the structural analog of a ketone where selenium replaces oxygen. Selenium-77 is one of the isotopes of selenium that is stable and naturally occurring, so selenone-containing chemicals can be analyzed by nuclear magnetic resonance spectroscopy. Selones can be used as chiral derivatizing agents for 77Se-NMR. Chiral oxazolidineselones can be used for stereoselective control of aldol reactions, analogous to the Evans aldol reaction that uses oxazolidinones, which allows 77Se-NMR to be used to determine the diastereomeric ratio of the aldol product.
In constast to analogous structures with earlier chalcogens, selones greater steric and electronic stabilization. Selenobenzophenone reversibly dimerizes. It is known to undergo cycloaddition with 1,3-dienes in a reaction similar to the Diels-Alder reaction.
